atuin: add passthru for NixOS module tests

pkgs/tools/misc/atuin/default.nix

@@ -6,6 +6,7 @@
 , libiconv
 , Security
 , SystemConfiguration
+, nixosTests
 }:
 
 rustPlatform.buildRustPackage rec {
@@ -32,6 +33,10 @@ rustPlatform.buildRustPackage rec {
       --zsh <($out/bin/atuin gen-completions -s zsh)
   '';
 
+  passthru.tests = {
+    inherit (nixosTests) atuin;
+  };
+
   meta = with lib; {
     description = "Replacement for a shell history which records additional commands context with optional encrypted synchronization between machines";
     homepage = "https://github.com/ellie/atuin";